منع الوصف
Denial of the stated attribute.
A classical discussion of the alms of breaking the fast asks whether the legal obligation is grounded simply in the act of breaking a fast or in responsibility for a person under one's care. If an analogy relies on the former, the opponent may deny that this is the operative attribute in the original case.
This is not itself a fresh ruling on alms. It tests the first argumentative step: has the alleged causal attribute actually been established? The proponent must demonstrate the relevant link rather than merely restate the conclusion.